Claus Weddepohl: the First Dutch Mathematical Economist.- 1 Introduction.- 2 Axiomatic Choice Theory.- 3 General Competitive Equilibrium.- 4 Non-Walrasian Equilibria.- 5 Overlapping Generations.- 6 Markets.- 7 Price Dynamics.- 8 Final Remarks.- Publication of H.N. Weddepohl.- Equilibrium.- Indeterminateness of Equilibria and Macroeconomics.- 1 Introduction and Preview.- 2 Two Extensions of the Arrow-Debreu Model.- 3 Combining Money and Price Rigidities.- 4 Elementary Dynamics.- 5 Incomplete-Markets Heuristics.- References.- Equilibrium Properties of Status Seeking and Conformism.- 1 Introduction.- 2 Status Seeking and Conformism Revisited.- 3 Final Remarks.- References.- Recent Criticism of General Equilibrium Theory.- 1 Introduction.- 2 Walker and General Equilibrium.- 3 Critical Evaluation.- 4 Further Development of General Equilibrium Theory.- References.- Coordinating Thoughts on Coordination Failures.- 1 Introduction.- 2 Coordination Games.- 3 Strategic Models of Coordination Failures.- 4 Strategic Models of Coordination Failures with a Coordinating Role for Prices.- 5 General Equilibrium Models of Coordination Failures.- 6 Conclusion.- References.- Dynamic Implementation of Competitive Equilibria in Renegotiation Proof Equilibrium.- 1 Introduction.- 2 Economies over Time and Dynamic Mechanisms.- 3 Nash Implementation and Folk Theorems.- 4 Implementation in Subgame Perfect Nash Equilibrium.- 5 Implementation in Renegotiation Proof Equilibrium.- References.- On the Economics of Managing and Returns to Communications Technology.- 1 Introduction.- 2 The Model.- 3 The Path of st.- 4 The Characteristics of the Organization.- 5 Discussion.- Appendix A: The Continuous Case.- References.- Dynamic Adjustment of Supply Constrained Disequilibria to Walrasian Equilibrium.- 1 Introduction.- 2 The Model.- 3 The Equilibrating Mechanism.- 4 Connected Set of Disequilibria.- 5 The Dynamics of the Adjustment Process.- References.- A General Equilibrium of Managed Services.- 1 Introduction.- 2 The Service Opportunity Structure.- 3 The Governance Structure.- 4 An Economy with Marketable Stratified Services.- References.- Markets.- Undesired Goods in Applied Demand Analysis.- 1 Introduction.- 2 An Example.- 3 A Formalization.- 4 Possible Extensions.- References.- Animal Communication.- Still Searching for Bertrand Equilibrium.- 1 Introduction.- 2 Variations on Bertrand's Theme.- 3 Differentiation, Timing and Cooperation.- 4 Behavior.- 5 Conclusion.- References.- Environmental Policy and Bertrand Competition: a General Equilibrium Approach.- 1 Introduction.- 2 The Model.- 3 Perfect Competition, Monopoly and Cournot Oligopoly.- 4 Bertrand Oligopoly: Partial Equilibrium.- 5 Bertrand Oligopoly: General Equilibrium.- 6 Conclusion.- References.- Retiring Rich.- 1 The Usual Suspects.- 2 Everyone Pays, Claus Gains.- 3 Afterthoughts and Future Plans.- References.- Scope for Defined Contribution.- 1 Introduction.- 2 Model.- 3 Results.- 4 Discussion.- 5 Concluding Remarks.- References.- Dynamics.- On the Possibility of Economic Dynamics.- 1 An Example of Equilibrium Dynamics.- 2 Disequilibrium Dynamics.- 3 Disequilibrium Dynamics in the Theory of Growth.- 4 A Brief Digression.- 5 Summing Up.- References.- A Bifurcation in an Overlapping Generations Model.- 1 Introduction.- 2 The Model.- 3 Existence.- 4 Bifurcations.- 5 Conclusions.- References.- Heterogeneous Beliefs and Routes to Complex Dynamics in Asset Pricing Models with Price Contingent Contracts.- 1 Introduction.- 2 The Model.- 3 A Simple Example.- 4 General Comments and Discussion.- References.- Why Are There Nowadays only a Few Articles on Matrices in Economic Journals?.- 1 Introduction.- 2 Stability in an Exchange Economy.- 3 Stability in Cournot Oligopoly.- 4 Final Remarks.- References.- Learning in Networks.- 1 Introduction.- 2 Network Structure and Technological Change.- 3 Network Formation.- 4 Concluding Remarks.- References.- Imitation of Cooperation in Prisoner's Dilemma Games with Some Local Interaction.- 1 Introduction.- 2 The Models.- 3 Imitating the Best Behavior.- 4 Imitating the Best Agent.- 5 Conclusion.- References.- Bubbles and Long Range Dependence in Asset Prices Volatilities.- 1 Introduction.- 2 A Simple Theoretical Model.- 3 Simulations and Testing.- 4 Conclusion.- References.- Nonlinear Dynamics and the Stability of Competitive Equilibria.- 1 Introduction.- 2 The Tatonnement Process.- 3 Complicated Dynamics in the Tatonnement Process.- 4 Towards a More Realistic Adjustment Process.- 5 Concluding Remarks.- References.